Timco L50w16bb Hex No.3 Self Drill Screw W16 Bag Sr 5.5 X 50Mm Bag Of 85 5055893307472

TIMco

The TIMco Hex No.3 Self-Drill Screws deliver precision-engineered fastening solutions for roofing sheet applications on light section steel up to 5.0mm thickness. These 5.5 x 50mm hex head screws eliminate pre-drilling requirements, streamlining installation across demanding roofing projects. The exterior silver plating provides robust corrosion resistance, withstanding up to 1,000 hours of salt-spray exposure. This protective finish ensures reliable performance in urban and industrial environments with low salt atmospheres. Each screw features an integrated 16mm EPDM washer and a fixed 12mm washer for secure, weather-resistant sealing. The optimised 8mm socket size and recommended operating speeds of 1,000-1,800 RPM facilitate efficient installation across professional roofing applications. Features & Benefits: Self-drilling design eliminates pre-drilling on light section steel up to 5.0mm thick. Exterior plating delivering 1,000 hours salt-spray corrosion resistance for long-term durability. Fire classification A1 for enhanced safety compliance in roofing installations. Integrated 16mm EPDM washers provide weather-resistant sealing and protection. Optimised for roofing sheet installations in urban and industrial areas with low salt atmospheres. Corrosion rating: 3 (suitable for urban and industrial environments with low salt atmosphere). Diameter: 5.5mm, Length: 50mm. Fixed washer diameter: 12mm, Socket size: 8mm. Recommended RPM: 1,000-1,800. Includes: Bag of 85 screws with EPDM washers.